You have a serious problem if he is too shy to talk with you. How will you ever communicate about all the important issues you are likely to face in a long-term relationship? I'm not sure what kind of a relationship you're in or how long you've been together, but if you can't convince him to trust you enough to open up and communicate with you, I genuinely believe you'd be better off with someone else. And I suspect he'd be happier if he waits until he finds a partner better suited to him. Either someone who is happy and comfortable with the silence or someone who has the unique qualities he needs to allow him to feel comfortable enough to be open and communicative.
I'm sure you see a lot of good qualities in the guy, but if you're envious of other couples, I think you need to find a new partner who allows you to be yourself and have all the noisy interactions and long conversations you crave. A successful relationship requires partners who are well suited to each other.